Refer to the Accompanying Data (All ?Gures in Billions of

$$\begin{array} { | l | c | } \hline \text { Personal Taxes } & \$ 40 \\\hline \text { Social Security Contributions } & 15 \\\hline \text { Taxes on Production and Imports } & 20 \\\hline \text { Corporate Income Taxes } & 40 \\\hline \text { Transfer Payments } & 22 \\\hline \text { U.S. Exports } & 24 \\\hline \text { Undistributed Corporate Profits } & 35 \\\hline \text { Government Purchases } & 90 \\\hline \text { Gross Private Domestic Investment } & 75 \\\hline \text { U.S. Imports } & 22 \\\hline \text { Personal Consumption Expenditures } & 250 \\\hline \text { Consumption of Fixed Capital (depreciation) } & 25 \\\hline \text { Net Foreign Factor Income } & 10 \\\hline \text { Statistical Discrepancy } & 0 \\\hline\end{array}$$ Refer to the accompanying data (all ?gures in billions of dollars) . PI is

A) $314.
B) $346.
C) $408.
D) $437.